Safety Evaluation Process for Two-Lane Rural Roads: A 10-Year Review
Abstract
A practical procedure was developed that explicitly considers the driving behavioral and safety rules of a horizontal alignment for the evaluation of roadway new designs; redesigns; and projects of rehabilitation, restoration, and resurfacing. Design classes were developed to classify, from a traffic safety point of view, roadway sections as good, fair, or poor; these design classes are associated with three safety criteria to develop an overall quantitative safety evaluation procedure for two-lane rural roads. The safety criteria are introduced to analyze and evaluate by (a) Safety Criterion (SC) I: the difference between design speed and actual driving behavior as expressed by variations in observed 85th percentile speed; (b) SC II: the difference between observed 85th percentile speeds on successive design elements; and (c) SC III: the difference between side-friction assumed and side-friction demanded at the 85th percentile speed level on curves. Furthermore, the issues discussed include design speed, operating speed, sound tangential, and side-friction factors, as well as the application of tangents in the design process. A comparative analysis of the actual accident situation with the results of the safety criteria reveals a convincing agreement. Thus, the great advantage of the new concept is that as early as in the design stages, safety criteria can predict the endangerment (low, medium, and high) for new alignments or allow statements about the safety conditions of existing (old) roadway sections or whole road networks.
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References
1. Lamm R., Choueiri E. M., Hayward J. C., and Paluri A. Possible Design Procedure to Promote Design Consistency in Highway Geometric Design on Two-Lane Rural Roads. In Transportation Research Record 1195, TRB, National Research Council, Washington, D.C., 1988, pp. 111–122.
2. Lamm R., Choueiri E. M., and Hayward J. C. Tangent as an Independent Design Element. In Transportation Research Record 1195, TRB, National Research Council, Washington, D.C., 1988, pp. 123–131.
3. Leisch J. E., and Leisch J. P. New Concepts in Design-Speed Application. In Transportation Research Record 631, TRB, National Research Council, Washington, D.C., 1977, pp. 4–14.
4. Hayward J. C. Highway Alignment and Superelevation: Some Design-Speed Misconceptions. In Transportation Research Record 757, TRB, National Research Council, Washington, D.C., 1980, pp. 22–24.
5. Koeppel G., and Bock H. Operating Speed as a Function of Curvature Change Rate. In Research Road Construction and Road Traffic Technique (Forschung Strassenbau und Strassenverkehrstechnik), Vol. 269, Minister of Transportation, Bonn, Germany, 1979.
6. Lamm R. Driving Dynamics and Design Characteristics: A Contribution for Highway Design Under Special Consideration of Operating Speeds. Thesis for Appointment as University Lecturer. Publications of the Institute for Highway and Railroad Engineering, Vol. 11, University of Karlsruhe (Technische Hochschule), Germany, 1973.
7. Lamm R., Psarianos B., Mailaender T., Choueiri E. M., Heger R., and Steyer R. Highway Design and Traffic Safety Engineering Handbook (Hayward J. C., Choueiri E. M., and Quay J. A., language eds.), McGraw-Hill, New York, 1999.
8. Bitzl F. The Safety Level of Roads. In Research Road Construction and Road Traffic Technique (Forschung Strassenbau und Strassenverkehrstechnik), Vol. 28, Minister of Transportation, Bonn, Germany, 1964.
9. Krebs H. G., and Kloeckner J. H. Investigations of the Effect of Highway and Traffic Conditions Outside Built-Up Areas on Accident Rates. In Research Road Construction and Road Traffic Technique (Forschung Strassenbau und Strassenverkehrstechnik), Vol. 223, Minister of Transportation, Bonn, Germany, 1977, pp. 1–63.
10. Lamm R., Wolhuter K., Beck A., and Ruscher T. Introduction of a New Approach to Geometric Design and Road Safety. Proc., 20th Annual South African Transport Conference, Pretoria, South Africa, July 16–19, 2001.
11. Lamm R., Ruscher T., and Beck A. Instructor’s Guide About the Practical Application of Quantitative Safety Criteria for Two-Lane Rural Roads. According to the Highway Design and Traffic Safety Engineering Handbook. Institute for Highway and Railroad Engineering, University of Karlsruhe (Technische Hochschule), Germany, unpublished manuscript, 2001.
12. Eberhard O. Development of an Operating Speed Background for Roadway Sections with Grades ≥ 6 Percent, As Well As Analysis and Evaluation of Selected Road Sections, Based on Three Safety Criteria. M.S. thesis. Institute for Highway and Railroad Engineering, University of Karlsruhe (Technische Hochschule), Germany, 1997.
13. Zumkeller K. Analysis and Evaluation of Possible Relationships Between Traffic Safety, Road Design, and Road Equipment with Road Markings, Traffic Control Devices, and Guardrails. M.S. thesis. Institute for Highway and Railroad Engineering, University of Karlsruhe (Technische Hochschule), Germany, 1998.
14. Schneider B. Development of a Superior Safety Module for the Evaluation of the Danger of Two-Lane Rural Roads in Tune with the Actual Accident Situation. M.S. thesis. Institute for Highway and Railroad Engineering, University of Karlsruhe (Technische Hochschule), Germany, 1999.
15. Cafiso S. Experimental Survey of Safety Conditions on Road Stretches with Alignment Inconsistencies. Proc., 2nd International Symposium on Highway Design, TRB and Road and Transportation Research Association (FGSV), Mainz, Germany, June 14–16, 2000, pp. 377–387.
16. Beck A. Analysis and Evaluation of Relationships Between Traffic Safety and Highway Design on Two-Lane Rural Roads. M.S. thesis. Institute for Highway and Railroad Engineering, University of Karlsruhe (Technische Hochschule), Germany, 1998.
17. Ruscher R. Evaluation of the Safety Concept of the Institute for Highway and Railroad Engineering (ISE) with the Actual Accident Situation for a Broad Data Basis. M.S. thesis. Institute for Highway and Railroad Engineering, University of Karlsruhe (Technische Hochschule), Germany, 2001.
18. Harwood D. W., Fambro D. B., Fishburn B., Joubert H., Lamm R., and Psarianos B. International Sight Distance Design Practices. In Transportation Research Circular E-C003: International Symposium on Highway Geometric Design Practices. TRB, National Research Council, Washington, D.C., Jan. 1998, pp. 32–31 to 32–23.
19. Schmidt G. Analyses and Evaluation of Roadway Sections with Respect of Three Safety Criteria. M. S. thesis. Institute for Highway and Railroad Engineering, University of Karlsruhe (Technische Hochschule), Germany, 1995.
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Article first published: January 2002
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